Has anyone actually run this and checked the output? When I put logging on, the first (my only) ball seems to move to (6.0,1.8 ) and stays there in a single tick. Should this happen? Shouldn't it be at (6.0,11.8 ) where it collides with the groundbox?

I'm just trying to get started and the lack of info coming out is a bit rubbish!

I've started playing around with this today and have a problem; the call to world.update() does not actually update the object's x,y positions. addBall() takes it's x,y positions from the onTouch event.